Elysion is a new unit introduced in Metal Slug Attack.
A former pirate, she was cursed by the Monoeye UFO, which mutated her. She also found other marine creatures that were cursed by the Monoeye UFO, and decided to use the curse's power against the aliens to fulfill her vengeance.
She enjoys drinking, as her victory animation shows her drinking a glass of wine.
First appearing in the Extra Ops "Clash of the Worlds", she finds herself mutated and searches for the Monoeye UFO to destroy it. Upon discovering the Monoeye UFO, she summons three krakens to penetrate the glass dome, destroying it.
- Her death animation is similar to that of Odette and Annette.
- Elysion is the first unit in Metal Slug Attack to change dialogue when the special attack is enhanced, changing from "Kraken!" to "Burn them!". This trait is also seen when Elena and Licht's special attacks are enhanced.